import 'package:fisrt_a/baseWidget/BaseDemo.dart';
import 'package:fisrt_a/baseWidget/flex.dart';
import 'package:fisrt_a/baseWidget/textDemo.dart';
import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(
        // This is the theme of your application.
        //
        // Try running your application with "flutter run". You'll see the
        // application has a blue toolbar. Then, without quitting the app, try
        // changing the primarySwatch below to Colors.green and then invoke
        // "hot reload" (press "r" in the console where you ran "flutter run",
        // or simply save your changes to "hot reload" in a Flutter IDE).
        // Notice that the counter didn't reset back to zero; the application
        // is not restarted.
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Flutter Demo Home Page'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key? key, required this.title}) : super(key: key);

  // This widget is the home page of your application. It is stateful, meaning
  // that it has a State object (defined below) that contains fields that affect
  // how it looks.

  // This class is the configuration for the state. It holds the values (in this
  // case the title) provided by the parent (in this case the App widget) and
  // used by the build method of the State. Fields in a Widget subclass are
  // always marked "final".

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      // This call to setState tells the Flutter framework that something has
      // changed in this State, which causes it to rerun the build method below
      // so that the display can reflect the updated values. If we changed
      // _counter without calling setState(), then the build method would not be
      // called again, and so nothing would appear to happen.
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    // This method is rerun every time setState is called, for instance as done
    // by the _incrementCounter method above.
    //
    // The Flutter framework has been optimized to make rerunning build methods
    // fast, so that you can just rebuild anything that needs updating rather
    // than having to individually change instances of widgets.
List<Widget> _list = [];


for (int i =0;i< titleItems.length;i++){
  _list.add(buildListData(context, titleItems[i], iconItems[i],i));
}    
//分割线
var divideTitles = ListTile.divideTiles(tiles: _list,context: context).toList();




    return Scaffold(
      appBar: AppBar(
        // Here we take the value from the MyHomePage object that was created by
        // the App.build method, and use it to set our appbar title.
        title: Text(widget.title),
      ),
      body: Center(
        // Center is a layout widget. It takes a single child and positions it
        // in the middle of the parent.
        child: new ListView.separated(itemBuilder: (context,item){
          return buildListData(context,titleItems[item],iconItems[item],item);
        }, separatorBuilder: (BuildContext context,int index) => new Divider(), itemCount: iconItems.length)
      ),
      // floatingActionButton: FloatingActionButton(
      //   onPressed: _incrementCounter,
      //   tooltip: 'Increment',
      //   child: Icon(Icons.add),
      // ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
  Widget buildListData(BuildContext context,String titles,Icon iconItem,int index){
    return new ListTile(
      leading: iconItem,
      title: new Text(
        titles,
        style: TextStyle(fontSize: 18),
      ),
      trailing: new Icon(Icons.keyboard_arrow_right),
      onTap: (){

        if(index == 0){
          Navigator.push(context, MaterialPageRoute(builder: (context){
            return BaseDemo();
          }));
          return;
        }else if(index == 1){

Navigator.push(context, MaterialPageRoute(builder: (context){
            return FlexDemo();
          }));
          return;
        }
        showDialog(context: context, builder: (BuildContext context){
          
          return new AlertDialog(
            title: new Text(
              'ListViewAlert',
              style: new TextStyle(
                color: Colors.black54,
                fontSize: 18.0
              ),
            ),
            content: new Text('你选择的item内容为:$titles'),
          );
        });
      },
    );
  }
  var titleItems = <String>[
 '基础类组件','布局类组件',
 '容器类组件','可滚动组件',
 '功能性组件','事件处理与通知',
 '动画','自定义组件',
 '文件操作与网络请求','国际化',
  ];
  var iconItems = <Icon>[
    new Icon(Icons.widgets),
    new Icon(Icons.layers_outlined),
    new Icon(Icons.contact_page),
    new Icon(Icons.list),
    new Icon(Icons.functions),
    new Icon(Icons.notifications),
    new Icon(Icons.animation),
    new Icon(Icons.info),
    new Icon(Icons.file_present),
    new Icon(Icons.local_activity)
  ];


}
